Home / 13,209.11-18,230.44-8,174.95

Finding the Fourth Proportional to 13,209.11, 18,230.44 and 8,174.95

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Solution

The fourth proportional to 13,209.11, 18,230.44 and 8,174.95 is: 11,282.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,209.11 : 18,230.44 = 8,174.95 : x
  2. Step 2: Convert to fraction form
    13,209.11/18,230.44 = 8,174.95/x
  3. Step 3: Cross multiply
    13,209.11x = 18,230.44 × 8,174.95
  4. Step 4: Simplify right side
    13,209.11x = 149,032,960.62
  5. Step 5: Solve for x
    x = 149,032,960.62/13,209.11
  6. Step 6: Final answer
    x = 11,282.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.